<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge,chrome=1">
    <title>iframe</title>
</head>
<body>
    <a href="html/list.html" target="iframe1">列表页面</a>&lt;da&gt;
    <iframe name="iframe1" src="demo.html" frameborder="0" width="400px"></iframe>
</body>
</html>